.header{
    height: 56px;
    border-bottom: 1px solid #ddd;
    box-sizing: content-box;
    position: relative;
    .back{
        height: 56px;
        width: 40px;
        position: absolute;
        background: url(../../../../images/arrows-left.png) 10px -4px no-repeat;  
    }
    .title{
        height: 56px;
        line-height: 56px;
        text-align: center;
        font-size: 16px;
        color: #000;
        font-weight: bold;
    }
}